• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Polymer Science >Polyamide 6 silica nanocomposites prepared by in situ polymerization
【24h】

Polyamide 6 silica nanocomposites prepared by in situ polymerization

机译：原位聚合制备聚酰胺6二氧化硅纳米复合材料

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A polyamide 6 (PA 6)/silica nanocomposite was obtained through a novel method, in situ polymerization, by first suspending silica particles in epsilon-caproamide under stirring and then polymerizing this mixture at high temperature under a nitrogen atmosphere. The silicas were premodified with aminobutyric acid prior to the polymerization. The effects of the addition of unmodified and modified silicas on the dispersion, interfacial adhesion, isothermal crystallization, and mechanical properties of PA 6 nanocomposites were investigated by using scanning electron microscopy, dynamic mechanical analysis, differential scanning calorimetry, and mechanical tests, respectively. The results show that the silicas dispersed homogeneously in the PA 6 matrix. The addition of silicas increases the glass transition temperature and crystallization rate of PA 6. The mechanical properties such as impact strength, tensile strength, and elongation at break of the PA 6/modified silica nanocomposites showed a tendency to increase and decrease with increase of the silica content and have maximum values at 5% silica content, whereas those of the PA 6/unmodified silica system decreased gradually. (C) 1998 John Wiley & Sons, Inc. [References: 38]
机译：通过新颖的原位聚合方法，首先在搅拌下将二氧化硅颗粒悬浮在ε-己酰胺中，然后在氮气气氛下在高温下聚合该聚酰胺6（PA 6）/二氧化硅纳米复合材料。在聚合之前，用氨基丁酸对二氧化硅进行了预改性。通过使用扫描电子显微镜，动态力学分析，差示扫描量热法和力学测试分别研究了未改性和改性的二氧化硅的添加对PA 6纳米复合材料的分散性，界面附着力，等温结晶和机械性能的影响。结果表明，二氧化硅均匀地分散在PA 6基体中。二氧化硅的添加提高了PA 6的玻璃化转变温度和结晶速率。PA6 /改性二氧化硅纳米复合材料的机械性能（如冲击强度，拉伸强度和断裂伸长率）显示出随着PA 6的增加而增加和减少的趋势。二氧化硅含量在5％时达到最大值，而PA 6 /未改性二氧化硅体系的含量则逐渐降低。 （C）1998 John Wiley＆Sons，Inc. [参考：38]

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号